Without being able to see every trader's account summary or being able to get an honest answer from every single trader about their losses, there is no "exact percentage," so all of your trade decisions would be based off inaccurate data anyway.
The market is not a meritocracy, there is no "getting what you deserve," whether it's 50% or 90% losing, it's not useful data on a given trade. If you follow momentum, you'll know when the dumb money is in or out, which is enough to strategize with. The market is never fair, the market doesn't care. We're all here to take each other's money. It's take or be taken, that's the reality. Darwin's Law.
Happy trading!